In a dramatic rollback of environmental oversight, President Donald Trump took action Thursday to clear the way and speed up development of a wide range of commercial projects by cutting back federal review of their impact on the environment. Trump’s proposal calls for greatly narrowing the scope of the half-century-old National Environmental Policy Act, which was signed by President Richard...

On the seventh anniversary of Superstorm Sandy, New Jersey’s governor committed the state to a far-reaching plan to deal with climate change and protect itself from future storms.

Climate change is making stronger El Niños, which change weather worldwide and heat up an already warming planet, a new study finds. Scientists examined 33 El Niños — natural warming of equatorial Pacific that triggers weather extremes across the globe — since 1901. They found since the 1970s, El Niños have been forming farther to the west in warmer waters,...

With the National Oceanic and Atmospheric Administration reporting that March 2019 was the second warmest March on record, the reality of climate change is difficult to dispute. But even more concrete are the real effects that will be apparent in the District as the Earth grows warmer.

“The weather isn’t what it used to be.” I hear that a lot from the public. Many long-time weather forecasters agree, and I am one of them.

Hundreds of thousands of students in more than 100 countries skipped school Friday to demand action on climate change. Kids in more than 1,200 cities across the globe are protesting a failure of governments to cut greenhouse-gas emissions. The “Friday’s for Future” rallies were one of the biggest international climate change actions yet.

Arnold Schwarzenegger says he wishes he could travel back in time like the cyborg he played in “The Terminator” so he could stop fossil fuels from being used. “If we would’ve never started in that direction and used other technology, we’d be much better off,” the actor and former California governor said Monday at the start of a U.N. climate...

Local lawmakers are asking for a criminal investigation into the discharge of wastewater that turned the water below Niagara Falls black.

A federal climate report says the United States is already feeling the effects of climate change, with temperatures rising dramatically over the last four decades. That’s according to The New York Times, which acquired a draft copy of the report by scientists from 13 federal agencies. The report says extreme heat waves have become more common and extreme cold waves...

During a time in which climate action efforts are widely discussed, Montgomery County officials have made it clear where they stand.

A study that measures the human toll of air pollution from global manufacturing and trade shows how buying goods made far away can lead to premature deaths both there and close to home. More than 750,000 people die prematurely from dirty air every year that is generated by making goods in one location that will be sold elsewhere, about one-fifth...

A federal wildlife agency studying the Steller sea lion decline in Alaska’s Aleutian Islands is looking for help from citizen scientists. Volunteers don’t need raincoats or rubber boots to pitch in, just eyeballs and a computer screen. Fisheries researchers at the National Oceanic and Atmospheric Administration want them to sort through 500,000 images captured by 20 cameras at six remote...

It sounds like an idea that would warm a conservative Republican’s heart: Kill funding of a regional environmental cleanup that has lasted seven years and cost the federal government more than $2 billion, with no end in sight. If states want to keep the program going, let them pick up the tab. That is what President Donald Trump’s 2018 budget...

The Trump administration is delaying a new rule tightening safety requirements for companies that store large quantities of dangerous chemicals. The rule was imposed after a fertilizer plant in West, Texas, exploded in 2013, killing 15 people. Scott Pruitt, administrator of the Environmental Protection Agency, delayed the effective date of the Obama-era rule until June. Pruitt’s action late Monday came...